Lord Anderson of Ipswich: My Lords, it is an uncomfortable fact that the law as it stands has not been as effective as it might have been in prosecuting radicalisers who have stopped short of inviting support for a proscribed organisation but whose words have none the less been instrumental in encouraging others to support terrorist groups, often by actions, not just words. I shall not rehearse the saga of Anjem Choudary and the many unsuccessful attempts to prosecute him over the years. Clauses 1 and 2 attempt to fill a gap in our law by extending the proscription offences. For that reason I look sympathetically on their general thrust although, like the noble Lord, Lord Carlile, I support Amendment 5.
For my part, I could not vote for an extension of the already strong proscription offences in circumstances where substantial numbers of proscribed organisations— 14 by the Home Office’s own admission, and no doubt more in Northern Ireland—are proscribed despite failing to satisfy the statutory condition for proscription, which is being concerned in terrorism. That would expose people to the risk of long prison sentences for expressing opinions supportive of organisations that have long since laid down their arms and committed to peaceful engagement, but which however remain prescribed because no one associated with them has been willing to go to the expense, or indeed attract the associated  publicity, of going to court to get them de-proscribed. My support for Clauses 1 and 2 will therefore depend on the outcome of Amendment 59, which would introduce the meaningful review of proscription orders and which noble Lords will consider on another occasion.

Viscount Hailsham: I wondered that myself but came to the conclusion, having weighed up the language, that to argue that something should not be proscribed probably does constitute action supportive of the proscribed organisation. Even if I was wrong about that, though—in this context my views are shared by the noble Lord, Lord Carlile—it is certainly an arguable position, and I am in favour of clarity in law. That is what I would why I would go with Amendment 5 in the name of my noble friend.
That brings me to Amendment 6, where I am afraid I part company with my noble friend.